Kellan LutzAge: 25You know him as: Sexy sparkly vampire Emmett Cullen in the Twilight Saga and Sexy Dude in His Underpants from the Calvin Klein ads.Why He's Sexy: He's serious about keeping those rock-hard abs that made him famous. Lutz tells People: "I cut back on my candy intake, swim a lot and try to drink as much water as I can."Getty Images
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DrakeAge: 24You know him as: The Sexy recording artist behind hits like "Over" and the not-so-Sexy Jimmy Brooks from Degrassi: The Next Generation.Why He's Sexy: He likes women with talent. Drake tells People: "I find it sexy when women play instruments or knit."Getty Images
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Matthew MorrisonAge: 32You know him as: Sexy school teacher Mr. Schue from Glee.Why He's Sexy: He's not afraid of showing off his killer abs, as evidenced in this month's Details magazine. As for his sexiest trait, Morrison tells InStyle: "I have those muscle lines right over my hips from my dancing days. I call them my dancing lines."Getty Images
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Joe ManganielloAge: 33You know him as: Sexy werewolf Alcide on True Blood. He's the one who's allergic to flannel shirts.Why He's Sexy: Manganiello managed to make a silly show like One Tree Hill worth watching when he played a bartender.Alberto E. Rodriguez /Getty Images
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Robert Downey Jr.Age: 45You know him as: Sexy Iron Man -- even though Iron Man 2 was less than sexy. And by sexy, we mean good.Why He's Sexy: His Due Date costar Michelle Monaghan tells People: "Whenever I see him, I walk away smiling. Those beautiful brown eyes may have something to do with it."Getty Images
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Jesse WilliamsAge: 29You know him as: Sexy Dr. Jackson on Grey's Anatomy.Why He's Sexy: He's one of the few staffers from the Mercy West merger that viewers actually like.Getty Images
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Justin TimberlakeAge: 29You know him as: The guy who brought Sexy back.Why He's Sexy: Having conquered the music industry, Timberlake is now trying to bring sexy back to the big screen. He's garnerned rave reviews for his role in The Social Network.Getty Images
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Vin DieselAge: 43You know him as: Sexy Riddick in The Chronicles of Riddick and from his Sexy work in the Fast and Furious movies.Why He's Sexy: Diesel topped People's first ever Sexiest Men poll on Facebook.Getty Images
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Jake GyllenhaalAge: 29You know him as: Sexy cowboy No. 1 from Brokeback Mountain and Sexy Prince of Persia.Why He's Sexy: This year, Gyllenhaal has gone from kicking butt in Prince of Persia to showing off his softer side in Love and Other Drugs. He tells People: "I think a true leading man has both strength and vulnerability,"Getty Images
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